[Dnsmasq-discuss] About 127.0.0.1 in resolv.conf [WAS: Web hang ups after repeated access to one site - dnsmasq related?]

[Simon Kelley]

Max Barry wrote:
> Simon Kelley wrote:
>> Hugo Heden wrote:
>>> But what happens if dnsmasq then
>>> forwards a ("non-local") dns-query to 127.0.0.1, i.e to itself? Could
>>> that not result in some kind of infinite loop weirdness?
>> dnsmasq knows that it's listening on 127.0.0.1 so it's clever enough not 
>> to forward requests there.
> 
> Hello! Sorry to gravedig, but I'm having this problem: dnsmasq listens 
> on 127.0.0.1 and forwards requests to itself.
> 
>  From /var/log/daemon.log:
> 
> Oct 15 09:24:35 eve dnsmasq[2396]: started, version 2.47 cachesize 150
> Oct 15 09:24:35 eve dnsmasq[2396]: compile time options: IPv6 GNU-getopt 
> DBus I18N TFTP
> Oct 15 09:24:35 eve dnsmasq[2396]: no servers found in /etc/resolv.conf, 
> will retry
> Oct 15 09:24:35 eve dnsmasq[2396]: read /etc/hosts - 16 addresses
> Oct 15 09:24:41 eve NetworkManager: <info>  starting...
> ...snip...
> Oct 15 09:24:49 eve NetworkManager: <info>    address 192.168.0.2
> Oct 15 09:24:49 eve NetworkManager: <info>    prefix 24 (255.255.255.0)
> Oct 15 09:24:49 eve NetworkManager: <info>    gateway 192.168.0.1
> Oct 15 09:24:49 eve NetworkManager: <info>    nameserver '127.0.0.1'
> Oct 15 09:24:49 eve NetworkManager: <info>    nameserver '61.9.134.49'
> Oct 15 09:24:49 eve NetworkManager: <info>    nameserver '61.9.133.193'
> Oct 15 09:24:49 eve NetworkManager: <info>    nameserver '208.67.222.222'
> Oct 15 09:24:49 eve NetworkManager: <info>    nameserver '208.67.220.220'
> Oct 15 09:24:49 eve NetworkManager: <info>    nameserver '192.168.0.1'
> Oct 15 09:24:49 eve NetworkManager: <info>    domain name 
> 'vic.bigpond.net.au'
> Oct 15 09:24:49 eve NetworkManager: <info>  Activation (wlan1) Stage 5 
> of 5 (IP Configure Commit) scheduled...
> Oct 15 09:24:49 eve NetworkManager: <info>  Activation (wlan1) Stage 4 
> of 5 (IP Configure Get) complete.
> Oct 15 09:24:49 eve NetworkManager: <info>  Activation (wlan1) Stage 5 
> of 5 (IP Configure Commit) started...
> Oct 15 09:24:51 eve NetworkManager: <info>  (wlan1): device state 
> change: 7 -> 8
> Oct 15 09:24:51 eve dnsmasq[2396]: reading /etc/resolv.conf
> Oct 15 09:24:51 eve dnsmasq[2396]: using nameserver 208.67.220.220#53
> Oct 15 09:24:51 eve dnsmasq[2396]: using nameserver 208.67.222.222#53
> Oct 15 09:24:51 eve dnsmasq[2396]: using nameserver 61.9.133.193#53
> Oct 15 09:24:51 eve dnsmasq[2396]: using nameserver 61.9.134.49#53
> Oct 15 09:24:51 eve dnsmasq[2396]: using nameserver 127.0.0.1#53
> 
> Note the line above. If I manually restart dnsmasq, that line instead 
> looks like "dnsmasq[3853]: ignoring nameserver 127.0.0.1 - local 
> interface". But each time I turn on my computer each day, and dnsmasq 
> starts automatically, it's as per the above, and it listens to the local 
> interface:
> 
> Oct 15 09:25:49 eve dnsmasq[2396]: query[A] www.bom.gov.au from 127.0.0.1
> Oct 15 09:25:49 eve dnsmasq[2396]: forwarded www.bom.gov.au to 127.0.0.1
> Oct 15 09:25:49 eve dnsmasq[2396]: query[A] weather.noaa.gov from 127.0.0.1
> Oct 15 09:25:49 eve dnsmasq[2396]: forwarded weather.noaa.gov to 127.0.0.1
> Oct 15 09:25:49 eve dnsmasq[2396]: query[A] ntp.ubuntu.com from 127.0.0.1
> Oct 15 09:25:49 eve dnsmasq[2396]: forwarded ntp.ubuntu.com to 127.0.0.1
> Oct 15 09:25:49 eve dnsmasq[2396]: query[A] imap.gmail.com from 127.0.0.1
> Oct 15 09:25:49 eve dnsmasq[2396]: forwarded imap.gmail.com to 127.0.0.1
> Oct 15 09:25:49 eve dnsmasq[2396]: query[A] ntp.ubuntu.com from 127.0.0.1
> Oct 15 09:25:49 eve dnsmasq[2396]: forwarded ntp.ubuntu.com to 127.0.0.1
> 
> These requests time out, making everything very slow.
> 
> $ more /etc/resolv.conf
> # Generated by NetworkManager
> domain vic.bigpond.net.au
> search vic.bigpond.net.au
> nameserver 127.0.0.1
> nameserver 61.9.134.49
> nameserver 61.9.133.193
> # NOTE: the libc resolver may not support more than 3 nameservers.
> # The nameservers listed below may not be recognized.
> nameserver 208.67.222.222
> nameserver 208.67.220.220
> 
> This problem only began after I started using NetworkManager on Ubuntu 
> (previously I had manually configured /etc/network/interfaces).
> 
> Any help appreciated!
> 
> Max.


Could you try

http://www.thekelleys.org.uk/dnsmasq/test-releases/dnsmasq-2.52test3.tar.gz

and let me know if that fixes things?


Cheers,

Simon.